J/ApJ/612/481 Optical brightness of ε Eri dust ring (Proffitt+, 2004)
Limits on the optical brightness of the ε Eridani dust ring.
Proffitt C.R., Sahu K., Livio M., Krist J., Calzetti D., Gilliland R.,
Grady C., Lindler D., Woodgate B., Heap S., Clampin M., Gull T.R.,
Lisse C.M.
<Astrophys. J., 612, 481-495 (2004)>
=2004ApJ...612..481P 2004ApJ...612..481P
ADC_Keywords: Stars, dwarfs ; Stars, distances ; Stars, diameters
Keywords: circumstellar matter - stars: individual (ε Eridani)
Abstract:
The STIS CCD camera on the Hubble Space Telescope (HST) was used to
take deep optical images near the K2 V main-sequence star ε
Eridani in an attempt to find an optical counterpart of the dust ring
previously imaged by submillimeter observations. Upper limits for the
optical brightness of the dust ring are determined and discussed in
the context of the scattered starlight expected from plausible dust
models.
Description:
The HST observations in this program were made on 2002 January 26,
using six adjacent single-orbit visits.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table9.dat 146 59 Detected objects near ε Eri, ordered by
distance from the central star
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1 I1 h RAh Hour of Right Ascension (J2000.0, Ep 2002.07)
3- 4 I2 min RAm Minute of Right Ascension (J2000.0, Ep 2002.07)
6- 12 F7.4 s RAs Second of Right Ascension (J2000.0, Ep 2002.07)
15 A1 --- DE- Sign of Declination (J2000.0, Ep 2002.07)
16 I1 deg DEd Degree of Declination (J2000.0, Ep 2002.07)
18- 19 I2 arcmin DEm Arcminute of Declination (J2000.0, Ep 2002.07)
21- 26 F6.3 arcsec DEs Arcsecond of Declination (J2000.0, Ep 2002.07)
29- 34 F6.3 arcsec Dist Distance from ε Eri
36- 37 I2 pix Size1 ? Minor axis (if the source is elliptical)
38 A1 --- --- [*]
39- 42 F4.1 pix Size2 Diameter (or major axis if the source is
elliptical)
45- 48 F4.1 mag STmag Total brightness in STIS 50CCD STMAG units
51-146 A96 --- Notes Notes
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History:
From electronic version of the journal
(End) Marianne Brouty [CDS] 07-Apr-2005